Earth Science

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Earth Science

Two Written essays supposed to be a 200 word minimum response required. Credible reference materials, including your course textbook(s), may be used to complete the assessment. It has to be in an APA Format

· APA Information

· In-text and reference citations are required for all written responses.

Describe the Hertzsprung-Russel diagram. How is it useful in classifying stars? Where do stars tend to cluster on the diagram? Where on the H-R diagram does a star spend most of its life?

How do we calculate or determine the distances to stars? What units do we use and what are the limitations (if any) of the method used for such calculations?